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Suffusion tests on cohesionless granular matter / Yacine Sail in European journal of environmental and civil engineering, Vol. 15 N° 5 (Mai 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 5 (Mai 2011) . - pp. 799-817 Titre : Suffusion tests on cohesionless granular matter : Experimental study Type de document : texte imprimé Auteurs : Yacine Sail, Auteur ; Didier Marot, Auteur ; Lue Sibille, Auteur Année de publication : 2011 Article en page(s) : pp. 799-817 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Soil  erosion  Suffusion  Blowout  Cohesionless  soils  Water  flow  Strain Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Under internal flow, hydraulic earth structures (dikes, levees, or dams) can incur a migration of particles possibly inducing a modification of hydraulic and mechanic characteristics. With the objective to characterize this phenomenon named internal erosion and its consequences on mechanical behaviour of granular materials, a large oedopermeameter device has been developed. An axial load is applied on specimen together with a downward flow with a constant hydraulic gradient. During the testing time, the bench can measure the spatial change of density and interstitial pressure along the specimen. Axial deformation, injected flow and extracted mass are also measured during the testing time. Erosion of fine particles is characterised by an extraction (out of specimen) of these particles on downstream specimen part and also by a fine particles migration in the whole specimen. This suffusion induces a settlement and a localized increase of interstitial pressure. Afterwards a localized blowout appears and triggers large specimen deformations. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16149 [article] Suffusion tests on cohesionless granular matter : Experimental study [texte imprimé] / Yacine Sail, Auteur ; Didier Marot, Auteur ; Lue Sibille, Auteur . - 2011 . - pp. 799-817. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 5 (Mai 2011) . - pp. 799-817 Mots-clés : Soil  erosion  Suffusion  Blowout  Cohesionless  soils  Water  flow  Strain Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Under internal flow, hydraulic earth structures (dikes, levees, or dams) can incur a migration of particles possibly inducing a modification of hydraulic and mechanic characteristics. With the objective to characterize this phenomenon named internal erosion and its consequences on mechanical behaviour of granular materials, a large oedopermeameter device has been developed. An axial load is applied on specimen together with a downward flow with a constant hydraulic gradient. During the testing time, the bench can measure the spatial change of density and interstitial pressure along the specimen. Axial deformation, injected flow and extracted mass are also measured during the testing time. Erosion of fine particles is characterised by an extraction (out of specimen) of these particles on downstream specimen part and also by a fine particles migration in the whole specimen. This suffusion induces a settlement and a localized increase of interstitial pressure. Afterwards a localized blowout appears and triggers large specimen deformations. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16149